Totalizer-resetting mechanism.



G. P. GEIGER. TOTALIZER RBSETTING MECHANISM.

APPLICATION FILED MAY 31, 1913.

1, 1 29,974, Patented Mar. 2, 1915.

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GEORGE P. GEIGER, OF DAYTON, OHIO, ASSIGNOB TO THE NATIONAL CASH REGISTER .CQMPANY, F DAYTON, 01-110, A CORPORATION OF OHIO, (INCORPORATED IN 1908.)

TOTALIZERFRESETTING MECHANISM.

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Specification of Letters Patent.

Patented Mar. 2, 1915..

Application filed May 31, 1913. serial No. 770,891.

To all whom it may concern: 7

Be it known that I, GEORGE P. Gnronn, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Totalizer-Resetting Mechanism, of which 1 declare the following to be a full, clear, and exact description.

This invention relates to totalizing devices for accounting machines and more particularly to the totalizer resetting mechanism for such machines. 4 o

In the following description and the accompanying drawings the invention is shown embodied in a cash register of the type shown and described in United States Letters Patent 497,860 granted May 23rd, 1893, to Thomas Carney with improvements to the totalizer shown and described in United States Letters Patent 570,196 granted October 27th, 1896, to F. Barnard. These devices are only used for illustrative purposes,

' however, as the improvement is one that can be applied in various forms to other kinds of accounting machines in which the totalizer or other registering mechanism is arranged to be turned to a zero position. It is also to be understood that while in this instance the improvement is shown in the form of a screen to conceal the totalizer until it is fully reset, another form of a signal or indicator could be used instead.

As these totalizers are now constructed it is possible to turn them toward zero until the zeros show on all of the totalizer wheels and still not have the mechanism all restored to normal position. When this is .done with most types of machines the machines are inoperative and often 'the users come to the conclusion that the machines are out of order.. This causes considerable trouble and annoyance to all interested.

lhe object of this invention is to provide a device that will show the user at a glance when the totalizer has not been turned completely to.zero and thereby. remove this source of complaint. 1

. W th this and incidental objects in view,

theinvention consists in certain novel featuresof construction and, combinations of parts the essential elements of which areset forth in appended claims and a preferred form of embodiment of which is hereinafter described with reference to the f'drawmgs which accompany and form part of this specification.

Of said drawings: Figure 1 is a sectional new of a register of the type shown in the above mentioned Carney patent. Fig. 2 is a plan view of a totalizer with the improvement assembled on it. Fig. 3 is a detaii showing the construction of the improve ment and its application to a totalizer.

The cash register used for illustrative purposes has a plurality of groups of amount keys 1 which are grouped according to denominations, a totalizer 2, indicators 3, and diderential' mechanism comprising segment gears d for actuating the totalizer. Each group of keys is arranged so that any key in the group may actuate the segment gear that meshes with a pinion 8' attached to the totalizer wheel corresponding in denominationalvalue to the group of keys which are connected to its respective segment. Each key of the group carries an upright slide 5 provided with a slot 6 in the upper end.

These slots vary in depth. A rod 7 carried keys will cause the segment to be rocked diiferentially according to their value. For instance, the 9 key will rock the segment nine units of movement, the 5 key five units, and so on. By this mechanism the totalizer 2 is differentially actuated as desired.

The totalizer 2 is carried by a rock frame 23 and is normally out of engagement with the segment gears 4, but at the proper points in an operation is carried into and out of engagement with said gears by rocking the frame 23 on its pivots.23l. This rock ng movement is imparted to the frame by a cam 9, actingupon an arm plvoted at 232 to the frame 23. ldhe arm 10 has an opening surrounding one of the pivots 232, and its forward end is normally in contact with a stud 233 on the rock frame 23. At the beginning of the downward stroke of the registering keys 1, or before the registering segments 4 are started by the slides the cam'9 depresses the rearcend of the arm 10,

and said arm acts against the stud 233 with the pivot 232 serving as a fulcrum 'to throw segment gears have operated the totalizer, the rear end of the arm is raised by the cam 9 and coiiperates with the pivots 231 dotted outline 13 in Fig. 1. The shaft 12 has a squaresided groove 14 best shown in Fig. 3. In order to turn the totalizer to zero it is onlynecessary to rotate the shaft 12 clockwise (Fig. 1) so that the square side of the groove in the shaft will engage the ends of the turning pawls and carry the totalizer wheels to zero. The totalizer shown in the drawings has a bevel gear 15 fastened to the end .of the resetting shaft 12. A. look 16 has a corresponding bevel gear 17 secured to the lower end of the lock barrel and meshing with the gear 15. Turning the lock by means of the key 18 will rotate the resetting shaft and carry the totalizer wheels to zero in the manner described.

The totalizer has a transfer mechanism for carrying operations between wheels but this mechanism need not be described in detail in connection with this application. Part ofthis transfer mechanism consists of three star wheels 19 (Fig. 2) with spur gears 20 attached to their sides. These spur gears are .normally in engagement with cor responding gears attached to the sides of the opposite totalizer wheels so that when it is desired to. rotate the totalizer wheel sto zero it is necessary to disengage the gears 20 from .the totalizer wheel gears. For this reason the star wheels 19 and their attached gears 20 are carried in a separate frame 21 which is pivoted as r at 22 to the main totalizer frame 23. 'Rocking this frame 21 on its pivots carries the gears 20in and out of mesh with the. totalizer wheel gears. This rocking movement isaccomplished as follows: Pivoted on a stud 24 (Fig.3) fastened in the main frame 23 of the totalizer is a bell crank lever 25. The rear end ofthe upper extension of this bell crank lever carries an anti-frictionroller 26 which rests on the edge of. a cam 27 fastened to the end of the totalizerwheel shaft.1 2. When the bell crank lever and the other end restcourse, turned and the cut 28 in its edge'acting against the anti-friction roller 26 rocks the bell crank lever 25 on its pivot 24. The I stud 29 carried by the bell crank lever 25 will in turn rock the star wheel frame on its pivots 22 carrying the star wheel gears out of engagement with the totalizer wheel gearsand leaving the totalizer wheels free to be rotated by turning the shaft 12. When the resetting shaft 12 has completed its rotation the spring 42 will rock the bell crank lever 25 and move the roller 26 back into engagement with the cut 28 in the edge of the cam. Pivoted on the stud 24 is also a stop pawl 31 with the rear end shaped to engage a stud 32 in the cam 27. This pawl has a laterally extending ear 33 resting on the upper edge of an extension 34 of the bell crank lever 25 and is provided with a torsion spring 35 which has one end hooked over the upper edge of the bell crank lever 25 andthe other passing over the laterally extending ear 33 ofthe pawl. When the shaft 12 is turned in a resetting operation and the bell crank lever 25 rocked, the pawl 31 is carried up to bring it in the path of the stud 32 when the cam 27 completes its rotation at which time the stud strikes the end of the pawl and prevents further rotation of the shaft. Owingto the shape of the end of the pawl it is necessary to reverse the shaft 12.slightly to allow the spring 35 to disengage the pawl from the stop stud 32 after which the spring will return the pawl to its normal positio or guard for the mechanism such as is shown at 36 (Fig. 1 with an opening 37 through which the totalizer wheels may be read. Sometimes a user turns the totalizer wheels until the zeros can be seen at this opening but still has not turned them far enough for all of the mechanism to. berestored to normal position ready for operation. This invention as specifically described, provides a shield to-obscure the reading opening until the entire operation has been completed. The shield is shown best at 38 (Fig. 2) and is of the proper length and width to protect the totalizer wheels from view when drawn into the concealing position. It is supported at either end by an arm with a hole in the lower end surrounding the shaft 12 so that the shield-can be rocked bodily about said shaft. A link 39 has one end pivoted at 40 to one of the arms of the shield and the otherend pivoted at 41 to the star wheel frame 21. This link is of such a length that the shield 38 normally rests just back of the reading opening 37 as shown in Fig. 1.

It will readily be seen thatwhen the shaft 12 is rotated during the resetting operation and the star wheel frame 21 rocked forward as described in the foregoing,the link 39 will rock the shield about the shaft 12 and draw the shield forward under the reading opening. As the star wheel frame is held in the forward position until the resetting shaft 12 and the cam 27 have made a complete rotation, the shield 38 is, of course, held in position under the reading opening until the resetting operation is completed. Then when the star wheel frame 21 is returned to its normal position by the action of the spring 42, the shield 38 is, through the link 39 connecting it to the star wheel frame 23, rocked back from under the reading opening so that the totalizer wheels are again exposed.

lVhile the form of mechanism herein shown and described is admirably adapted to fulfil the objects primarily stated, it is to be understood that it is not intended to confine the invention to the one form of embodiment shown and described herein, as it is susceptible of embodiment in various forms, all coming Within the scope of the claims which follow.

What is claimed is 1. In a machine of the class described, the combination with a plurality of accounting elements, of a rotatable shaft supporting the accounting elements, and arranged to set said elements at a normal starting point when rotated, a pivoted element, means carried by the rotatable shaft for rocking the pivoted element when the shaft is rotated, a normally ineffective screen for concealing the accounting elements, and means permanently connecting said screen to the aforesaid pivoted element whereby the screen will be rendered effective to conceal the accounting devices when said element is rocked.

2. In a machine of the class described, the combination with a series of rotatable elements, of a rotatable shaft supporting the rotatable elements and arranged to set said elements at a normal starting point when r0- tated, a rock frame, means carried by the rotatable shaft for rocking said frame when the shaft is rotated, a normally inefiective screen for concealing the rotatable elements, and means permanently connecting said screen to the aforesaid frame whereby the screen will be rendered efi'ective to conceal the rotatable elements when the frame is rocked.

3. In a machine of the class described, the combination with a series of totalizer wheels, of a rotatable shaft supporting the totalizer wheels and arranged to set said wheels at zero when rotated, a cam carried by the rotatable shaft, a frame arranged to be rocked by said cam when the shaft is rotated, a normally ineffective screen for concealing the totalizer wheels, and a link connecting said screen to the aforesaid frame wherebv the screen will be rendered effective to conceal the totalizer wheels when the frame is-rocked.

4. In a machine of the class described, the combination with a plurality of accounting elements, of a rotatableshaft supporting the accounting elements and arranged to set said elements at a normal starting point when rotated, a pivoted element, means carried bv the rotatable shaft for rocking the pivoted element when said shaft is rotated, a screen for concealingthe accounting elements, and connections'between the screen and the pivoted element normally holding the screen in inefiective'position and moving it to effective position when the pivoted element is rocked.

5. In a machine of the class described, the combination with a series of totalizer wheels, of a rotatable shaft supporting said wheels and arranged to set them at zero when the shaft is rotated, a pivoted element, a cam carried by the rotatable shaft for rocking the pivoted element when said shaft is rotated, a screen for concealing the totalizer wheels from view, and a link connecting the screen and the pivoted element nortion and drawing it to effective position when the pivoted element is rocked.

In testimony whereof I afix my signature in the presence of two witnesses.

GEORGE P. GEIGER.

Witnesses: It. C. GLAss, CARL Bn'os'r.

99 mally holding the screen in ineffective posi- 

